Safety cover for cooking vessels



" July 3,1928.

1,676,146 B. A. KRAFFT sum COVER FOR cooxme VESSELS Filed Nov. 14. ,1923

I vapor llwmron Patented July 3, 1928.

? ir oFFIc.

nnuno A. KRAFFT, on, SAN FRANCISCO, CALIFORNIA.

SAFETY covert-non. COOKING vnssnns;

. Application filed November 14, 1923.- Serial no. 674,737,

Fig. 1 is a cross-sectional view of a .por-

'tion ofithepot or kettle with one form of safety covering thereon; Fig.2 1s a cross-see tional View of a portion of the pot or kettle withanother form of safety covering therehe illustration on Fig. 1 of thedrawing shows one form-in which the invention may be embodied, but it isto be understood-that the forms and proportions of parts may be Varied,and that suitable handles may be attached-Wherever desired. 1 Q

The pot or kettle 1 has-seated within its periphery an inner cover 2,and over this inner cover is an outer cover in. The inner cover 2extends over substantially the entire interior of the vessel '1 and ispreferably cone-shaped throughout the greater portion vof the distancefrom its center to its circumference but has a large openingtherethrough near 'thecenter thereof with a screen 1 secured over oradjacent this opening. Around the outer periphery ofthe conical portionof the inner cover 2 are a. number of holes5 to allow the materialwhichhas boiled over through the screen 4, as well as the liquid thathas condensed on the under side of the outer cover 3, to flow back intothe vessel. The holes 5 should be slightly larger than the openingsthrough the screen tso that solid particles which escape through thescreen 1 will be washed back into the vessel again.

The inner cover 2 has an upwardly extending rim or flange 6 adapted totelescope into the upper periphery of the vessel 1 and support theweight of the inner cover thereon. The outer cover 3 has I a suitablyformed peripheral flange 7 for supporting it on the flange 6 of theinner cover. A dome 8 is formed centrally of the outer cover 3 andpreferably integral therewith to stop any material which may boil overthrough the opening or screen i and to cause such material to bedeflected sidewise towards the openings 5. Around the periphery of thedome is an annular offset portion provided with small openings 9 toallow the escape of vapor so as to prevent any rise of pressure in theinterior of the vessel. These perforations are arranged facingdownwardly towards the periphery of the vessel so that they will not bestruck by the direct spray of the liquid boiling over through theopening or screen 4- but will allow superfluous vapor to escape freely.A fastening device in the form'of a screw post 10'with' cloublc'ortriplethreads is secured in any suitable manner to the central portionof the screen 4 and extends upwardly therefrom. Acornplementaryfastening device in the form of a knob 11 is secured centrally of theouter cover 3 and has a' screw threaded hole therethrough to receive thescrewpost 1O sothat the operator by taking hold of the knob 11" canremove both the inner and outer covers together, or by g vmg tlieknobaslight turn so as to unscrew it from the. post 10 can remove the outercover only and leave the inner cover remain in operative position on thevessel. V v

The illustration on Fig. 2 of the drawing showsanother form in'which theinvention maybe embodied. The pot or-kettle'l is- I similar to thatshown in Fig. 1 and has seated within its upper periphery an inner covermember 20 and an outer cover-member- 21 spaced vertically therefrom,both extending over substantially the entire interior of the vessel 1.The inner cover 20 has small open ings 22 through its central portion toallow V I the boiling, material to escape, and prefer.-

also, a series of'peripheral openings 23 close around the'margin of theinnerCoverQO to permitthe boiled over material to flow back into thevessel. The inner cover 20 carries on its periphery an upwardlyextending flange 24 to support-it upon the uppermost periphery of thevessel 1, and within this flange is seated the peripheral portion 25 ofthe outer cover 21. The middle portioirof the. outer cover 21 is formedwith a large opening therethrough bounded by the downwardly extendingflange or rim 26 which fits closely around the periphery of the knob 28,to be'described hereinafter, so as toprevent too much steam or boilingliquid from escaping at this'point; A handle member 27 is secured totheouter cover closely adjacent may be placed upon it to assist inholding the cover members on the vessel, and ii that is not sutliicientthe bail of the vessell maybe brought into vertical position so as toextend over the fiat horizontal portionoit' thehandle 27 to hold thecovers in place. Since cooking vessels With bails thereonarel oldi andWell-known, I have not illustrated the same in detail on the drawing,the pr sent invention being confinedentirely to the construction otthecover members themselves. The inner cover member has mounted centrallythereon a handle member, preferably in the foriniot' a knob 28,extending upwardly through the'opening in the outer cover formed by theflange or rin'i 26 and having its tree end norm-ally accessible to thehand o f the oprrator. The knob has two oppos'itesides flattened asshonnat 29 and the two alternate sides formed with suitable fasteningmeans in the rel-m 0t inclined slots 30 for 7 receiving con'iplementaryfastening means on the outer cover in the form of inwardly turned ends,31 or the handle member 2'4.

The slots 30 in conjunction with the inwardly turned ends 81 functionlike an interrupted screw thread so that the tWo cover me1nbers may bereadily connected together or disconnected from each other by relativerotation. Lateral displacement of the outer cover is at all timesprevented by the center ing effect of the knob 28, even it the outercow-*er'should be lifted by the steam pressure 'from Within While theinturned ends 3i of tion normally accessible to the hand of the operatorWhile the outer cover is in place.

2, A covering for a cooking vessel comprising spaced apart inner andouter cover members each extending over substantially the entireinterior the vessel, said inner cover having openings therethrough nearthe center thereof to permit the boiling niaterial to escape, said outercoi 'er having a large opening through its middle portion, an upwardlyextending handle member mounted on the innercoverandextending throughsaid large-opening and having its upper por stantiaily the entireinterior of thevcssel and having openings therethrou gh near t 'terthereoi to permit rho boiling mat escape, a flange eaten ding upwardlytroin the periphery of the inner cover adapted tobe seated irictionallywithin the uppermost iperiphery of the vessel, a separable outer coverextending over and spaced vertically from the inner cover throughoutsubstantially the entire interior of the vessel, ther peri-pheralportion of the outer cover bein mally rest upon the top oi"? said flangeand have its Weight supported thereby, said outer cover having a largeopening through the middle thereof, and a handle member mount ed on theinner cover and having its upper portion projecting through the opening"in the outer cover so as to be readily accessible to the hand of theoperator.

l. A covering t'or'a coolring vesselconiprising an inner cover in theform of a broad cone extending over the entire interior of the vesseland having-a vertical peripheral flange formed directly thereon andadapted to be seated iirictic'nally within the uppermost periphery ofthe vessel, said'tlange having its uppermost edge turned outwardly so asto support the eight of the inner cover directly upon the uppermost edgeof the .a vessel, the conical portion o1 said inner cover havingopenings therethrough adjacent the center thereof and other openingsadjacent the periphery ofthe vessel, the peripheral openings being atthe lowermost points of said inner cover and on the line Where the conial portion intersects the upturn d flange, an upwardly projectinghandlemember mounted centrally on said inner cover at r the apex of theconical portion, and an outer jects.

BRUNO A. KRAFFT.

titted to nor-

